Forming die special for automobile gear forge piece

Abstract

The invention belongs to the field of forging dies, and provides a special forming die for automobile gear forgings, which comprises a bottom plate, a plurality of elastic telescopic rods are fixedly mounted on the bottom plate, the tops of the plurality of elastic telescopic rods are fixedly connected with the same mounting ring, and a gear die with two open sides is rotatably mounted on the mounting ring; the two side faces of the gear mold are each provided with a shielding mechanism, the shielding mechanism at the bottom is used for blocking the bottom of the gear mold, and the shielding mechanism at the top rotates to the side of the gear mold so as to expose an opening in the top of the gear mold. According to the device, by arranging the turnover gear die, a blank can be subjected to multiple machining in the gear die, the blank can be punched before and after turnover, the punching quality is guaranteed, during forging, the device does not need to transfer forge pieces in multiple dies, workers are prevented from being scalded, the forge piece transferring time is saved, and the working efficiency is improved. And the forging efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of forging dies, and particularly relates to a special forming die for automobile gear forgings. Background Art

[0002] A forging is a workpiece or blank obtained by forging deformation of a metal billet. Forging is a processing method that uses a forging machine to apply pressure to a metal billet to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes, and dimensions. Through forging, defects such as as-cast porosity generated during the smelting process of metals can be eliminated, and the microstructure can be optimized. At the same time, due to the retention of the complete metal streamline, the mechanical properties of forgings are generally better than those of castings made of the same material.

[0003] Gears are important transmission parts in automobiles and are widely used in fields such as heavy trucks, light trucks, cars, motorcycles, and mini-cars. Existing automotive gears are mostly forged through dies. However, during the forging process, the side materials are prone to bouncing randomly, endangering the safety of operators. Moreover, during the forging process, repeated reheating in the furnace is required, which is extremely troublesome and has low efficiency.

[0004] In view of the above technical problems, the applicant has retrieved some prior arts. For example, the Chinese patent "Forging Die and Forging Method for Gear Forgings of Automotive Rear Axles and Gear Forgings" with the patent publication number CN114226612B. The forging die includes a gear prototype forging die, a punching die, and a tooth profile prototype forging die. By adopting the gear prototype forging die, the punching die, and the tooth profile prototype forging die, it is convenient to carry out assembly line forging operations and improve the forging efficiency of gears.

[0005] However, in the above patent solution, three dies are provided. Since the forgings need to be transferred among the three dies, and the forgings remain in a high-temperature state after each forging, it is easy to scald the staff during the transfer process. Moreover, since each die is a concave type, it is not easy to take out the forgings from the die during the transfer of the forgings, which will waste a lot of time and reduce the gear forging efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a special forming die for automobile gear forgings, aiming to solve the technical problems in the prior art that during the transfer among multiple dies, it is easy to scald the staff and the forging efficiency is reduced due to the difficulty of taking out the forgings from the die.

[0007] The present invention is realized as follows. A special forming die for automobile gear forgings includes a bottom plate. A plurality of elastic telescopic rods are fixedly installed on the bottom plate. The tops of the plurality of elastic telescopic rods are fixedly connected to the same mounting ring. A gear die with openings on both sides is rotatably installed on the mounting ring.

[0008] The shielding mechanisms are installed on both sides of the gear die. The shielding mechanism at the bottom is used to block the bottom of the gear die so as to make the bottom of the forging flat. The shielding mechanism at the top can be rotated to the side of the gear die, thereby exposing the opening at the top of the gear die, which is convenient for placing and extruding the blank.

[0009] A second telescopic rod and a first telescopic rod are also installed on the bottom plate, an abutment plate is fixedly installed on the second telescopic rod, a punching column is fixedly installed on the first telescopic rod, and a through hole for the punching column to pass through is opened on the abutment plate;

[0010] A driving mechanism is also installed on the bottom plate, one end of which is connected to the gear mold, and the driving mechanism is used to drive the gear mold to flip.

[0011] Further technical solution: The shielding mechanism includes a rotating motor fixedly mounted on the gear mold, the output shaft of the rotating motor is fixedly connected to a baffle, the surface of the baffle is in contact with the surface of the gear mold, and the baffle is provided with a through hole adapted to the punching column.

[0012] Further technical solution: the elastic telescopic rod includes a fixed cylinder fixedly mounted on the bottom plate, a movable rod is slidably mounted on the top of the fixed cylinder, the mounting ring is fixedly mounted on the top of the movable rod, and a compression spring is arranged between the movable rod and the fixed cylinder.

[0013] Further technical solution: The driving mechanism includes a driving motor fixedly mounted on a base plate, the output shaft of the driving motor is fixedly connected to a driving rod, a tensioning assembly is also mounted on the base plate, one end of the driving rod, the output end of the tensioning assembly and one end of the gear mold are all fixedly connected to sprockets, and the multiple sprockets are connected by chain transmission.

[0014] Further technical solution: The tensioning assembly includes a fixed base fixedly mounted on the base plate, a tensioning block is slidably mounted on the side of the fixed base, a first tension spring is connected between the tensioning block and the fixed base, a tensioning rod is rotatably mounted on the tensioning block, and one of the sprockets is fixedly mounted on one end of the tensioning rod.

[0015] Further technical solution: A locking mechanism is further provided between the gear mold and the baffle plate. When the baffle plate blocks the opening of the gear mold, the locking mechanism is used to fix the baffle plate to the gear mold.

[0016] Further technical solution: The locking mechanism includes a movable cavity opened on the gear mold. A gravity slider is slidably installed inside the movable cavity. A second tension spring is connected between the side of the gravity slider facing away from the axis of the gear mold and the side wall of the movable cavity. Initially, the weight of the gravity slider is much greater than the elastic force of the second tension spring, and the maximum elastic force of the second tension spring is greater than the frictional force between the gravity slider and the gear mold. The top of the gravity slider is fixedly connected with an "L"-shaped claw. The gear mold is provided with a first movable slit for the claw to extend and move. An arc-shaped groove adapted to the claw is opened on the side of the baffle, and a locking groove adapted to the claw is opened on the side of the arc-shaped groove.

[0017] Further technical solution: The locking mechanism further includes a locking plate. The locking plate is slidably installed on the gravity slider. A chute adapted to the locking plate is opened on the gravity slider. A slot adapted to the locking plate is opened on the baffle, and a locking hole for the locking plate to pass through is opened on it.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, by setting a rotatable gear mold, the blank can be processed multiple times in the gear mold. Before and after flipping, the blank can be punched, and the punching quality can be guaranteed. During forging, the device does not need to transfer the forging among multiple molds, avoiding scalding of the staff and saving the time for transferring the forging, thus improving the forging efficiency.

[0020] 2. In the present invention, by setting a locking mechanism, the baffle can be connected to one end of the gear mold, so that the gear mold bears part of the pressure from the forging, reducing the acting force on the output shaft of the rotating motor by the baffle, avoiding damage to the rotating motor due to a large acting torque, and prolonging the service life of the rotating motor.

[0021] 3. In the present invention, by setting a locking plate, during the flipping process of the gear mold, after the claw is inserted into the locking groove, the locking plate will gradually extend out of the chute and insert into the slot on the baffle. After the gear mold is completely flipped, one end of the locking plate is completely inserted into the slot, thus preventing the gravity slider from returning in advance. When there is wear between the gravity slider and the gear mold, resulting in a decrease in the friction coefficient between the gravity slider and the gear mold, the friction force between the gear mold and the gravity slider cannot overcome the elastic force of the second tension spring, causing the gravity slider to return in advance, and the gravity of the blank acts completely on the output shaft of the rotating motor, damaging the rotating motor. This problem is solved. Description of the Drawings

[0022] Figure 1 It is the overall top view structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall upward view structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the gear mold in the present invention.

[0025] Figure 4 In the present invention Figure 3 The enlarged schematic diagram at position A.

[0026] Figure 5 In the present invention Figure 3 The enlarged schematic diagram at position B.

[0027] Figure 6 It is a schematic diagram of the upward view structure of the baffle in the present invention.

[0028] In the attached drawings: 1. Bottom plate; 2. Elastic telescopic rod; 21. Fixed cylinder; 22. Movable rod; 3. Driving mechanism; 31. Driving motor; 32. Driving rod; 33. Tensioning rod; 34. Sprocket; 35. Chain; 36. Tensioning block; 37. First tension spring; 38. Fixed seat; 4. First telescopic rod; 5. Installation ring; 6. Gear mold; 7. Baffle; 8. Punching column; 9. Locking mechanism; 91. Second tension spring; 92. Hook; 93. First movable slit; 94. Gravity slider; 95. Locking plate; 96. Locking hole; 97. Chute; 98. Slot; 99. Lock groove; 910. Movable cavity; 911. Arc groove; 10. Contact plate; 11. Rotating motor; 12. Through hole; 13. Second telescopic rod. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0031] As Figures 1 - 6 shown, a special forming mold for automotive gear forgings provided by the present invention includes a bottom plate 1, on which a plurality of elastic telescopic rods 2 are fixedly installed, and the tops of the plurality of elastic telescopic rods 2 are fixedly connected to the same installation ring 5, and a gear mold 6 with openings on both sides is rotatably installed on the installation ring 5;

[0032] Both sides of the gear mold 6 are equipped with shielding mechanisms, which are respectively denoted as the first shielding mechanism and the second shielding mechanism. The second shielding mechanism is used to block the bottom of the gear mold 6 so as to make the bottom of the forging flat. The first shielding mechanism can rotate to the side of the gear mold 6, thereby exposing the opening at the top of the gear mold 6, facilitating the placement and extrusion of the blank;

[0033] A second telescopic rod 13 and a first telescopic rod 4 are also installed on the bottom plate 1. A contact plate 10 is fixedly installed on the second telescopic rod 13, and a punching column 8 is fixedly installed on the first telescopic rod 4. A through hole for the punching column 8 to pass through is provided on the contact plate 10;

[0034] A driving mechanism 3 is also installed on the bottom plate 1. One end of the driving mechanism 3 is connected to the gear mold 6, and the driving mechanism 3 is used to drive the gear mold 6 to flip.

[0035] During use, the second telescopic rod 13 drives the contact plate 10 to rise, so that the contact plate 10 abuts against the bottom of the second shielding mechanism. Then, the first telescopic rod 4 drives the punching column 8 to rise, so that the punching column 8 passes through the contact plate 10 and is flush with the second shielding mechanism. Then, the staff puts the high-temperature blank into the gear mold 6, and uses a forging press to extrude and form the blank. Then, the second telescopic rod 13 drives the contact plate 10 to descend by a certain height, and the descending height is less than the thickness of the gear mold 6. Then, the forging press extrudes the blank again. Since there is no blockage of the contact plate 10, the blank will descend synchronously with the gear mold 6 until the second shielding mechanism is blocked by the contact plate 10. And since the height of the punching column 8 remains unchanged, when the blank descends, the punching column 8 will penetrate into the interior of the blank to punch the blank;

[0036] Then, the second telescopic rod 13 drives the contact plate 10 to descend, the first telescopic rod 4 drives the punching column 8 to descend, and the first shielding mechanism blocks the opening at the top of the gear mold 6. Then, the driving mechanism 3 drives the gear mold 6 to rotate 180°. Then, the second shielding mechanism rotated above the gear mold 6 is opened to expose the opening of the gear mold 6. Then, the first telescopic rod 4 drives the punching column 8 to rise, so that the punching column 8 abuts against the bottom of the blank. Then, the second telescopic rod 13 drives the contact plate 10 to rise, so that the contact plate 10 rises to the position of the previous movement, that is, the distance from the top of the contact plate 10 to the bottom of the blank is less than the thickness of the gear mold 6. The forging press is used to extrude the blank again, then the punching column 8 punches the blank from two directions, and the hole can be penetrated. Finally, the second telescopic rod 13 drives the contact plate 10 to descend, so that the distance from the top of the contact plate 10 to the blank is equal to the thickness of the gear mold 6. Then, the forging press finally extrudes the blank once, then the blank can be perfectly formed in the gear mold 6. At the same time, the punching column 8 will also penetrate the entire blank, so that the gear forging retains a perfect shaft hole;

[0037] The device eliminates the need to transfer forgings between multiple dies, thus avoiding scalding of workers, saving time in transferring forgings, and improving forging efficiency.

[0038] The present invention provides a special forming die for automobile gear forgings. In this embodiment, the shielding mechanism includes a rotating motor 11 fixedly mounted on the gear die 6, and the output shaft of the rotating motor 11 is fixedly connected to a baffle 7. The surface of the baffle 7 is in contact with the surface of the gear die 6, and the baffle 7 is provided with a through hole 12 adapted to the punching column 8.

[0039] Specifically, the rotating motor 11 is connected to an eccentric position of the baffle 7 , and when the baffle 7 blocks the gear mold 6 , the axis of the baffle 7 and the axis of the gear mold 6 coincide with each other.

[0040] During the flipping process of the gear die 6, the two baffles 7 seal the two sides of the gear die 6, thereby preventing the blank in the gear die 6 from falling. After the flipping is completed, the baffle 7 on the top of the gear die 6 is rotated to the side of the gear die 6 to expose the blank so that the forging machine can extrude it.

[0041] The present invention provides a special forming mold for automobile gear forgings. In this embodiment, the elastic telescopic rod 2 includes a fixed cylinder 21 fixedly installed on the base plate 1, and a movable rod 22 is slidably installed on the top of the fixed cylinder 21. The mounting ring 5 is fixedly installed on the top of the movable rod 22, and a compression spring is arranged between the movable rod 22 and the fixed cylinder 21.

[0042] Specifically, initially, the elastic force of the compression spring is made much greater than the gravity of the blank, so that when the blank is turned over, the mounting ring 5 can be prevented from shaking up and down, thereby avoiding affecting the movement of the driving mechanism 3 .

[0043] The present invention provides a special forming die for automobile gear forgings. In this embodiment, the driving mechanism 3 includes a driving motor 31 fixedly mounted on a base plate 1, and the output shaft of the driving motor 31 is fixedly connected to a driving rod 32. A tensioning assembly is also installed on the base plate 1, and one end of the driving rod 32, the output end of the tensioning assembly and one end of the gear die 6 are all fixedly connected to a sprocket 34, and the multiple sprockets 34 are connected by a chain 35 for transmission.

[0044] Specifically, the driving motor 31 can drive the sprocket 34 to rotate through the driving rod 32, and the sprocket 34 can drive the gear mold 6 to rotate through the chain 35, so that the gear mold 6 can be flipped. When the gear mold 6 is squeezed and lowered, the tensioning assembly can tension the chain 35 to prevent the chain 35 from falling off the sprocket 34, thereby keeping the entire working process smooth and reducing the maintenance of the device.

[0045] A special forming die for automobile gear forgings provided by the present invention. In this embodiment, the tensioning assembly includes a fixed seat 38 fixedly installed on the bottom plate 1. A tensioning block 36 is slidably installed on the side surface of the fixed seat 38. A first tension spring 37 is connected between the tensioning block 36 and the fixed seat 38. A tensioning rod 33 is rotatably installed on the tensioning block 36. One of the sprockets 34 is fixedly installed at one end of the tensioning rod 33.

[0046] Initially, the first tension spring 37 is in a stretched state. When the gear die 6 descends, the sprocket 34 on the gear die 6 relaxes the tension on the chain 35. Then the first tension spring 37 will pull the tensioning block 36 and the tensioning rod 33 away from the drive motor 31 to maintain the tension of the chain 35.

[0047] A special forming die for automobile gear forgings provided by the present invention. Since the blank is heavy and the output shaft of the rotating motor 11 is located at a position far from the axis of the equalizing baffle 7. After the gear die 6 flips the blank, the center of gravity of the force exerted by the blank on the baffle 7 is at the axis position of the baffle 7, making the torque on the output shaft of the rotating motor 11 by the baffle 7 relatively large and extremely likely to damage the rotating motor 11. Therefore, in this embodiment, a locking mechanism 9 is further provided between the gear die 6 and the baffle 7. When the baffle 7 blocks the opening of the gear die 6, the locking mechanism 9 is used to fix the baffle 7 to the gear die 6, so that the gear die 6 bears part of the force and avoids damaging the rotating motor 11 due to a large torque.

[0048] A special forming die for automobile gear forgings provided by the present invention. In this embodiment, the locking mechanism 9 includes a movable cavity 910 opened on the gear die 6. A gravity slider 94 is slidably installed inside the movable cavity 910. A second tension spring 91 is connected between the side surface of the gravity slider 94 facing away from the axis of the gear die 6 and the side wall of the movable cavity 910. Initially, the weight of the gravity slider 94 is much greater than the elastic force of the second tension spring 91. For example, the weight of the gravity slider 94 is twice or three times the maximum elastic force of the second tension spring 91, and the maximum elastic force of the second tension spring 91 is greater than the friction force between the gravity slider 94 and the gear die 6, so that the second tension spring 91 can pull the gravity slider 94 back. The top of the gravity slider 94 is fixedly connected with an "L"-shaped claw 92. A first movable slot 93 for the claw 92 to extend and move is opened on the gear die 6. An arc-shaped groove 911 adapted to the claw 92 is opened on the side surface of the baffle 7 to avoid the claw 92 affecting the movement of the baffle 7. A locking slot 99 adapted to the claw 92 is opened on the side surface of the arc-shaped groove 911.

[0049] Specifically, during the rotation of the baffle 7, the hook 92 passes through the arc-shaped groove 911. When the baffle 7 seals the gear die 6, the axis of the baffle 7 coincides with the axis of the gear die 6. At this time, the locking groove 99 is located on the side of the hook 92. When the driving mechanism 3 drives the gear die 6 to flip, under the action of gravity, the gravity slider 94 overcomes the tension of the second tension spring 91 and slides towards the center of the gear die 6. The gravity slider 94 drives the hook 92 to insert into the locking groove 99, as Figure 5 shown, so that one end of the baffle 7 is connected to the gear die 6 through the hook 92 and the gravity slider 94, enabling the gear die 6 to share the pressure on the baffle 7, reducing the force exerted by the baffle 7 on the rotating motor 11, avoiding damage to the rotating motor 11 caused by the baffle 7, and extending the service life of the rotating motor 11;

[0050] After the gear die 6 finishes flipping, since the blank presses on the baffle 7, the baffle 7 pulls the gravity slider 94 through the hook 92, increasing the pressure between the gravity slider 94 and the gear die 6, thereby increasing the friction force between the gear die 6 and the gravity slider 94. This friction force will overcome the elastic force of the second tension spring 91, keeping the gravity slider 94 and the hook 92 in place;

[0051] When the gear die 6 flips again, since the gravity slider 94 at the bottom of the gear die 6 will be flipped to its top, and the gravity slider 94 is only subjected to the pressure from the baffle 7, therefore, the second tension spring 91 can pull the gravity slider 94 back to its initial position, releasing the connection between the hook 92 and the baffle 7. At this time, the rotating motor 11 can be used to drive the baffle 7 to rotate, opening the opening on the gear die 6 to expose the blank.

[0052] In a special forming die for automotive gear forgings provided by the present invention, after long-term use, wear will occur between the gravity slider 94 and the gear die 6, resulting in a decrease in the friction coefficient between the gravity slider 94 and the gear die 6. When the blank presses on the baffle 7, the friction force between the gear die 6 and the gravity slider 94 cannot overcome the elastic force of the second tension spring 91, causing the gravity slider 94 to return prematurely, and the gravity of the blank acts completely on the output shaft of the rotating motor 11, which will still damage the rotating motor 11. Therefore, in this embodiment, the locking mechanism 9 further includes a locking plate 95. The locking plate 95 is slidably mounted on the gravity slider 94. A sliding groove 97 adapted to the locking plate 95 is provided on the gravity slider 94. A slot 98 adapted to the locking plate 95 is provided on the baffle 7. A locking hole 96 for the locking plate 95 to pass through is provided on the 6.

[0053] Specifically, when the locking mechanism 9 is at the top of the gear die 6, under the action of gravity, the locking plate 95 retracts into the chute 97. During the flipping process of the gear die 6, the locking plate 95 gradually extends out of the chute 97 and inserts into the slot 98 on the baffle 7. After the gear die 6 is completely flipped, one end of the locking plate 95 is fully inserted into the slot 98, thereby preventing the gravity slider 94 from returning prematurely.

[0054] After the gear die 6 is flipped again, the locking plate 95 will retract into the chute 97 on the gravity slider 94 again, and then the second tension spring 91 can pull the gravity slider 94 back to its original position, as Figure 4 shown.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0056] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A special forming die for automotive gear forgings, including a bottom plate, characterized in that, A plurality of elastic telescopic rods are fixedly mounted on the bottom plate, and the tops of the plurality of elastic telescopic rods are fixedly connected to a same mounting ring, on which a gear mold with openings on both sides is rotatably mounted; The two sides of the gear mold are both installed with shielding mechanisms, the bottom shielding mechanism is used to block the bottom of the gear mold, and the top shielding mechanism is rotated to the side of the gear mold to expose the opening at the top of the gear mold; A second telescopic rod and a first telescopic rod are also installed on the bottom plate, an abutment plate is fixedly installed on the second telescopic rod, a punching column is fixedly installed on the first telescopic rod, and a through hole for the punching column to pass through is opened on the abutment plate; A driving mechanism is also installed on the bottom plate, one end of which is connected to the gear mold, and the driving mechanism is used to drive the gear mold to flip.

2. The special forming die for automotive gear forgings according to claim 1, wherein The shielding mechanism includes a rotating motor fixedly mounted on the gear mold, the output shaft of the rotating motor is fixedly connected with a baffle, the surface of the baffle is in contact with the surface of the gear mold, and the baffle is provided with a through hole adapted to the punching column.

3. The special forming die for automotive gear forgings according to claim 1, characterized in that, The elastic telescopic rod comprises a fixed cylinder fixedly mounted on the bottom plate, a movable rod is slidably mounted on the top of the fixed cylinder, the mounting ring is fixedly mounted on the top of the movable rod, and a compression spring is arranged between the movable rod and the fixed cylinder.

4. The special forming die for automobile gear forgings according to claim 1, characterized in that The driving mechanism includes a driving motor fixedly mounted on a base plate, the output shaft of the driving motor is fixedly connected to a driving rod, a tensioning assembly is also mounted on the base plate, one end of the driving rod, the output end of the tensioning assembly and one end of the gear mold are all fixedly connected to sprockets, and the multiple sprockets are connected by chain transmission.

5. The special forming die for automotive gear forgings according to claim 4, wherein The tensioning assembly includes a fixing seat fixedly mounted on the base plate, a tensioning block is slidably mounted on the side of the fixing seat, a first tension spring is connected between the tensioning block and the fixing seat, a tensioning rod is rotatably mounted on the tensioning block, and one sprocket is fixedly mounted on one end of the tensioning rod.

6. The special forming die for automotive gear forgings according to claim 2, wherein, A locking mechanism is also provided between the gear mold and the baffle. When the baffle blocks the opening of the gear mold, the locking mechanism is used to fix the baffle to the gear mold.

7. The special forming die for automotive gear forgings according to claim 6, characterized in that The locking mechanism includes an active cavity opened on the gear mold, a gravity slider is slidably installed inside the active cavity, a second tension spring is connected between the side of the gravity slider away from the axis of the gear mold and the side wall of the active cavity, the weight of the gravity slider is greater than the maximum elastic force of the second tension spring, and the initial elastic force of the second tension spring is greater than the friction between the gravity slider and the gear mold, an "L"-shaped hook claw is fixedly connected to the top of the gravity slider, a first active seam for the hook claw to extend and move is opened on the gear mold, an arc groove matched with the hook claw is opened on the side of the baffle, and a locking groove matched with the hook claw is opened on the side of the arc groove.

8. The special forming die for automotive gear forgings according to claim 7, characterized in that, The locking mechanism also includes a locking plate, which is slidably mounted on the gravity slider, a sliding groove matched with the locking plate is provided on the gravity slider, and a slot matched with the locking plate is provided on the baffle.

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